Connection error when try wireless play

[Aluiscard]

I have a problen playing games in local wireless mode, once the game start come a connection error, example in super smash bros ultimate when the countdown start this error appear in a white screen and go back, in mario kart same and the other players cant joining to my lobby. :/

In mario kart on lan mode work correctly whitout problem.

Any help you can give me I would appreciate.

I´m on firmware version 14.0.0, atmosphere 1.3.0 and ldn_mitm 1.13.0.